Impressionism did not begin as a movement. It began as an insult.
In April 1874, a group of painters who had been repeatedly rejected by the official Salon held their own exhibition in the studio of photographer Félix Nadar on the Boulevard des Capucines. Among the works on display was Claude Monet's small harbour view, painted at Le Havre in 1872 — a sketch of dawn mist, orange sun, and dark water. A critic named Louis Leroy seized on its title, "Impression, Sunrise," and wrote a mocking review: if this was an impression, it was less finished than wallpaper.
The artists adopted the name and turned the insult into a manifesto. What they shared was not a unified style but a set of refusals: refusal of the smooth, blended finish the Académie demanded; refusal of mythological and historical subjects; refusal of the studio as the only legitimate site of painting. In their place, they offered the fleeting — light as it actually behaves, colour as it actually appears, modern Parisian life as it actually unfolds.
The collapsible metal paint tube, patented by American painter John Goffe Rand in 1841, made it possible to carry pre-mixed colour into the landscape and work for hours without returning to the studio. Combined with the expanding French rail network, the tube transformed not just technique but the very location of painting.
"Without paint in tubes there would have been no Cézanne, no Monet, no Sisley or Pissarro — nothing of what the journalists were later to call Impressionists."
— Pierre-Auguste Renoir